#include<stdio.h>
int main(){
	int a=0,b=0,c=0,d=0;
	scanf("%d%d%d%d",&a,&b,&c,&d);
	printf("Sum = %d; Average = %.1f\n",a+b+c+d,(a+b+c+d)/4.0);
	return 0;
}
